References etc.

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Antti H S Laaksonen 2017-02-25 17:57:10 +02:00
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@ -391,7 +391,8 @@ to change an iteration over permutations into
an iteration over subsets, so that
the dynamic programming state
contains a subset of a set and possibly
some additional information.
some additional information\footnote{This technique was introduced in 1962
by M. Held and R. M. Karp \cite{hel62}.}.
The benefit in this is that
$n!$, the number of permutations of an $n$ element set,